A flaw was found in QEMU's virtio-blk device. The issue arises because the device does not properly validate the size of input descriptors before writing data. A malicious guest with high privileges could exploit this vulnerability by submitting a malformed virtio-blk SCSI request, leading to an out-of-bounds write in the host heap memory and a potential denial of service (DoS) for the QEMU process.
History

Fri, 12 Jun 2026 10:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 12 Jun 2026 09:45:00 +0000

Type Values Removed Values Added
Description A flaw was found in QEMU's virtio-blk device. The issue arises because the device does not properly validate the size of input descriptors before writing data. A malicious guest with high privileges could exploit this vulnerability by submitting a malformed virtio-blk SCSI request, leading to an out-of-bounds write in the host heap memory and a potential denial of service (DoS) for the QEMU process.
Title Qemu-kvm: heap buffer overflow in virtio-blk scsi request handling
First Time appeared Redhat
Redhat enterprise Linux
Redhat enterprise Linux Nvidia
Redhat openshift
Weaknesses CWE-122
CPEs cpe:/a:redhat:enterprise_linux_nvidia:
cpe:/a:redhat:openshift:4
cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
Redhat enterprise Linux Nvidia
Redhat openshift
References
Metrics cvssV3_1

{'score': 6.7, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-06-12T09:42:36.313Z

Reserved: 2026-05-26T12:51:11.502Z

Link: CVE-2026-48914

cve-icon Vulnrichment

Updated: 2026-06-12T09:57:47.176Z

cve-icon NVD

Status : Received

Published: 2026-06-12T10:16:22.177

Modified: 2026-06-12T10:16:22.177

Link: CVE-2026-48914

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.